安徽淮南大居山早更新世猪化石  

EARLY PLEISTOCENE SUID (MAMMAL) FROM THE DAJUSHAN,HUAINAN,ANHUI PROVINCE (CHINA)

作　　者：董为[1] 

机构地区：[1]中国科学院古脊椎动物与古人类研究所脊椎动物进化系统学重点实验室,北京100044

出　　处：《古脊椎动物学报》2008年第3期233-246,共14页Vertebrata Palasiatica

基　　金：中国科学院知识创新工程重点项目(编号:KZCX2-YW-106)资助

摘　　要：继在安徽淮南大居山发现晚中新世老洞哺乳动物群和新洞早上新世哺乳动物群后,1998年在老洞西侧又发现了西裂隙哺乳动物群。记述了西裂隙动物群中的李氏野猪(Sus ly- dekkeri),并对李氏野猪的地理与地层分布进行了综述,对李氏野猪与其近亲之间的关系进行了探讨。李氏野猪主要分布于华北、东北和江南,最早出现在下更新统下部,最晚可延续到上更新统底部。李氏野猪与早更新世分布在长江以南的裴氏猪(S.peii)、早更新世和中更新世分布在欧洲和中东的斯氏猪(S.strozzii)之间的关系很可能是地理亚种或仅仅是形态种,晚更新世以后分布于欧亚大陆的野猪(S.scrofa)是它们的直接后裔。A karstic cave called Laodong with rich Late Miocene mammals was found in 1990 in the Dajushan （117°01′E,32°35′N） area, 15 km northwest of Huainan City, Anhui Province in eastern China （Jin et al., 2000; Jin, 2004）. During the implementation of the State Key Project of the 9th ＂Five-year-plan＂, Jin and colleagues found two other fossil localities. One of them is located in a fissure called Xiliexi （it means West Fissure in Chinese） and about 60 m west of the Laodong Cave. Many mammal fossils were unearthed from the fissure deposits. Some specimens of Sus lydekkeri were identified as below. 1 Systematic paleontology Referred specimens A broken skull with right and left maxillas （ IVPP V 14565 ） ; a broken mandible with a small part of right branch and large part of left branch （ V 14566.1 ） ; a left mandibular fragment with ml （ V 14566.2）. See Table 1 for dental measurements and metric comparison. Deseription Specimen V 14565 is a broken juvenile skull, the preserved parts are incomplete left and right maxillas and nasals. The parts anterior to DP1 and posterior to M2 are lost. The skull is somewhat distorted （Fig. 1A）. Judged by the preserved parts, the nasals are long and narrow, the anterior parts are narrower, the dorsal parts are fiat. A developed pterygoid crest is located on the root of DP1 in maxilla. It is the posterior extension of ＂canine lid＂ and it is almost parallel to the alveolus of upper cheek teeth with a distance of 7.5 mm between the pterygoid crest and the alveolus margin. The pterygoid crest diminishes backward and disappears at the posterior margin of DP2. A large infraorbital foramen with a diameter of 10. 5 mm is located about 17 mm above the alveolus margin of M1. Zygomatic process of maxilla is located behind the infraorbital foramen. The developing canine root can be observed from the broken surface of the nostril. The emerging M2 can be seen from the broken surface at the zygomatic process of maxilla. Specimen V 14566.1 is an incompl

关 键 词：安徽淮南大居山 早更新世 猪科 

分 类 号：Q915.876[天文地球—古生物学与地层学]